613914613891986 has 32 divisors (see below), whose sum is σ = 1339673793954048. Its totient is φ = 186003658249040.

The previous prime is 613914613891861. The next prime is 613914613891987. The reversal of 613914613891986 is 689198316419316.

It is not an unprimeable number, because it can be changed into a prime (613914613891987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776432700 + ... + 777222983.

It is an arithmetic number, because the mean of its divisors is an integer number (41864806061064).

Almost surely, 2^{613914613891986} is an apocalyptic number.

613914613891986 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

613914613891986 is an abundant number, since it is smaller than the sum of its proper divisors (725759180062062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613914613891986 is a wasteful number, since it uses less digits than its factorization.

613914613891986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553661686.

The product of its digits is 362797056, while the sum is 75.

The spelling of 613914613891986 in words is "six hundred thirteen trillion, nine hundred fourteen billion, six hundred thirteen million, eight hundred ninety-one thousand, nine hundred eighty-six".